Investigation on True Stress-Strain Curves of Flat and Corner Regions of Cold-Formed Section Using 3D Digital Image Correlation Method
المؤلفون المشاركون
Zhang, Lihai
Xu, Bo
Xia, Junwu
Ma, Renwei
Wang, Jian
Chen, Xiaomiao
Chang, Hongfei
المصدر
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-18، 18ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-12-16
دولة النشر
مصر
عدد الصفحات
18
التخصصات الرئيسية
الملخص EN
The true stress-strain curve is the critical method to describe the practical material mechanical performance and the essential precondition to develop the advanced numerical simulation.
Experimental, analytical, and numerical procedures were performed in present research to investigate the true stress-strain curves of flat and corner regions of the cold-formed channel section.
The coupon tests with the 3D digital image correlation system were conducted on flat and corner specimens to directly obtain the true stress-strain curves.
The experimental results indicate that the tensile secondary-hardening phenomenon at the plastic strain stage was observed in the true stress-strain curves of flat coupons, and initial strain hardening behavior was produced in that of corner coupons.
Flat region exhibits a significant improvement of true ultimate strength compared to the engineering value.
The stress status of the corner region is developed to ultimate strength at the early strain phase and exhibits a slight increase compared with the nominal values at the plastic phase.
Cold-rolling action limits the ductility performance of the corner region, which highly restrains the tensile strain hardening at the plastic condition.
Thus, the true yielding strength of the corner region is obviously higher, but the true ultimate strength is significantly lower than that of the flat region.
Together with the optical measuring results, a trilinear model with two-stage strain hardening and a simplified trilinear models were established for describing the true stress-strain curves of flat and corner regions, respectively.
The load-displacement curves from numerical simulations fit very well with those of coupon tests, which validate the reliability of the optic measurement and the dependability of the simplified constitutive models.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Xu, Bo& Xia, Junwu& Ma, Renwei& Wang, Jian& Chen, Xiaomiao& Chang, Hongfei…[et al.]. 2019. Investigation on True Stress-Strain Curves of Flat and Corner Regions of Cold-Formed Section Using 3D Digital Image Correlation Method. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1115926
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Xu, Bo…[et al.]. Investigation on True Stress-Strain Curves of Flat and Corner Regions of Cold-Formed Section Using 3D Digital Image Correlation Method. Advances in Civil Engineering No. 2019 (2019), pp.1-18.
https://search.emarefa.net/detail/BIM-1115926
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Xu, Bo& Xia, Junwu& Ma, Renwei& Wang, Jian& Chen, Xiaomiao& Chang, Hongfei…[et al.]. Investigation on True Stress-Strain Curves of Flat and Corner Regions of Cold-Formed Section Using 3D Digital Image Correlation Method. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1115926
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1115926
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر